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New PZ: The SETI Boondoggle.
http://freethoughtbl...-seti-boondoggle/

I don’t buy it for a minute, and I think his whole argument is ridiculous.

As these guys always do, they have a small set of arguments. One is the argument from very big numbers: there are 10^22 stars in the known universe, and the current data shows that a significant fraction of them have planets, and they’ve even observed a few of them that have earth-like temperatures.

I say, big whoop. The other big numbers we could throw around are the distances of these stars from us and each other, which completely negate the bonus of large numbers. We’re simply not going to get an accidental signal from elsewhere; signal strength is going to drop off as the inverse of the square of the distance, so we’re not going to pick up some broadcast from an alien civilization. They’re going to have to aim a signal at us (one unexceptional star out of 10^22), and they’re going to have to invest a significant fraction of the energy output of their star to get the signal to us.

[...]


Good points.

There may be ways other than electromagnetic radiation (that is limited to a speed of "c") to send information over inter-stellar distances, but we don't know about them yet. Until that day comes, the vast scale of distances makes contact very, very unlikely.

Cheers,
Scott.
New Until Cochrane is born.
New I dunno
I mean, I get his points, I really do. That said, it doesn't mean we shouldn't try looking. Of course, there's the question of priorities and allocation of scarce resources...

Now, if we're talking about a situation where the money just goes to propping up an administrative overhead and it necessary perqs, well, that's a different issue entirely.

ETA: One other thing occurs to me; spending telescope idle time looking for weird patterned radio waves in places that aren't considered astronomically interesting may end up leading to something astronomically interesting... you could look at it as the ultimate version of blue-sky research.

ETA 2.0: While I'm at it... we are able to detect planets by the wobbles they create in their parent stars, as well as what happens to what we can see of the star's output when they pass in front of it. What would earth look like using those means? Just like another planet, or as a relatively bright radio source?

Some thought about what we look like from the outside looking in might help us figure out what we should be looking for. Planets that are anomalously bright in unusual wavelengths is probably a good candidate.
Expand Edited by jake123 Sept. 15, 2013, 11:55:13 AM EDT
Expand Edited by jake123 Sept. 15, 2013, 12:10:55 PM EDT
New Looking out is always good.
It wasn't that long ago that we didn't know that there was more than one galaxy in the universe.

http://amazing-space...son/discovery.php

I think PZ would agree.

His main beef is overselling the chance of contact soon:

Here’s Seth Shostak pumping up SETI again, and now he’s predicting contact with aliens within 20 or 25 years, or by 2030.


I should have included that opening sentence. :-)

Cheers,
Scott.
New Ah, you're talking about a disingenuous sales job
Sort of to be expected, even to be considered background noise (ha, see what I did there?) given how we seem to function on this continent.
New We do that.
[quote]While I'm at it... we are able to detect planets by the wobbles they create in their parent stars, as well as what happens to what we can see of the star's output when they pass in front of it. What would earth look like using those means? Just like another planet, or as a relatively bright radio source?

Some thought about what we look like from the outside looking in might help us figure out what we should be looking for. Planets that are anomalously bright in unusual wavelengths is probably a good candidate.[/quote]

It was mere months ago that I came across a story where there are researchers actively figuring out what we look like to Those Out There in a deliberate effort to help other researchers figure out what to look for.

And we've known about the unusual wavelengths idea for a long time. Turns out that the band of radio waves most useful to use for communication is the same space in the spectrum nature is at its quietest. More-or-less.

Wade.
Just Add Story http://justaddstory.wordpress.com/
     PZ: The SETI Boondoggle. - (Another Scott) - (5)
         Until Cochrane is born. -NT - (mmoffitt)
         I dunno - (jake123) - (3)
             Looking out is always good. - (Another Scott) - (1)
                 Ah, you're talking about a disingenuous sales job - (jake123)
             We do that. - (static)

First documented case of homosexual necrophilia in the mallard duck species.
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